From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f48.google.com (mail-pa0-f48.google.com [209.85.220.48]) by kanga.kvack.org (Postfix) with ESMTP id D00EE6B0036 for ; Sun, 17 Aug 2014 23:27:28 -0400 (EDT) Received: by mail-pa0-f48.google.com with SMTP id et14so6778916pad.21 for ; Sun, 17 Aug 2014 20:27:28 -0700 (PDT) Received: from szxga03-in.huawei.com (szxga03-in.huawei.com. [119.145.14.66]) by mx.google.com with ESMTPS id hl1si17704743pac.42.2014.08.17.20.27.26 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Sun, 17 Aug 2014 20:27:27 -0700 (PDT) Message-ID: <53F17230.5020409@huawei.com> Date: Mon, 18 Aug 2014 11:25:36 +0800 From: Zhang Zhen MIME-Version: 1.0 Subject: Re: [PATCH v2] memory-hotplug: add sysfs zones_online_to attribute References: <1407902811-4873-1-git-send-email-zhenzhang.zhang@huawei.com> <53EAE534.8030303@huawei.com> <1408138647.26567.42.camel@misato.fc.hp.com> In-Reply-To: <1408138647.26567.42.camel@misato.fc.hp.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Toshi Kani Cc: Andrew Morton , Dave Hansen , David Rientjes , isimatu.yasuaki@jp.fujitsu.com, n-horiguchi@ah.jp.nec.com, wangnan0@huawei.com, linux-kernel@vger.kernel.org, Linux MM On 2014/8/16 5:37, Toshi Kani wrote: > On Wed, 2014-08-13 at 12:10 +0800, Zhang Zhen wrote: >> Currently memory-hotplug has two limits: >> 1. If the memory block is in ZONE_NORMAL, you can change it to >> ZONE_MOVABLE, but this memory block must be adjacent to ZONE_MOVABLE. >> 2. If the memory block is in ZONE_MOVABLE, you can change it to >> ZONE_NORMAL, but this memory block must be adjacent to ZONE_NORMAL. >> >> With this patch, we can easy to know a memory block can be onlined to >> which zone, and don't need to know the above two limits. >> >> Updated the related Documentation. >> >> Change v1 -> v2: >> - optimize the implementation following Dave Hansen's suggestion >> >> Signed-off-by: Zhang Zhen >> --- >> Documentation/ABI/testing/sysfs-devices-memory | 8 ++++ >> Documentation/memory-hotplug.txt | 4 +- >> drivers/base/memory.c | 62 ++++++++++++++++++++++++++ >> include/linux/memory_hotplug.h | 1 + >> mm/memory_hotplug.c | 2 +- >> 5 files changed, 75 insertions(+), 2 deletions(-) >> >> diff --git a/Documentation/ABI/testing/sysfs-devices-memory b/Documentation/ABI/testing/sysfs-devices-memory >> index 7405de2..2b2a1d7 100644 >> --- a/Documentation/ABI/testing/sysfs-devices-memory >> +++ b/Documentation/ABI/testing/sysfs-devices-memory >> @@ -61,6 +61,14 @@ Users: hotplug memory remove tools >> http://www.ibm.com/developerworks/wikis/display/LinuxP/powerpc-utils >> >> >> +What: /sys/devices/system/memory/memoryX/zones_online_to > > I think this name is a bit confusing. How about "valid_online_types"? > Thanks for your suggestion. This patch has been added to -mm tree. If most people think so, i would like to modify the interface name. If not, let's leave it as it is. Best regards! > Thanks, > -Toshi > > > > -- > To unsubscribe, send a message with 'unsubscribe linux-mm' in > the body to majordomo@kvack.org. For more info on Linux MM, > see: http://www.linux-mm.org/ . > Don't email: email@kvack.org > > -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org